Ranging system and method for satellites

Details Ranging system and method for satellites Ranging system and method for satellites

G - Physics

01

S

G01S 13/32 (2006.01) H04B 7/01 (2006.01) H04B 7/185 (2006.01) H04B 17/00 (2006.01) H04L 7/00 (2006.01) G01S 5/14 (2006.01) G01S 11/08 (2006.01)

Patent

CA 2362067

In a satellite ranging system predetermined bit sequence or group of bit sequence in a transport stream, which is a digital signal, are used to generate trigger signals on the basis of which the delay introduced into the transport stream by the travel path from a satellite ground station to the satellite and back or to another satellite ground station is determined allowing a calculation of the distance between the ground station(s) and the satellite. The predetermined bit sequence or group of bit sequences may be inserted into the transport stream at the uplink site, for example as a specific payload P. In order to avoid insertion of additional packets the transport stream or part of it may be used as a predetermined bit sequence.

Dans un système de mesure de la distance de satellites, on utilise une suite de bits ou un groupe de suites de bits prédéterminées introduites dans un flux transporté du type signal numérique pour produire des signaux de déclenchement sur la base desquels on détermine le retard introduit par la distance entre une station au sol et le satellite, puis en retour, du satellite à une autre station au sol, ce qui permet de calculer la distance entre la ou les stations au sol et le satellite. La suite de bits ou groupes de suites de bits prédéterminées peuvent être intégrées au flux transporté sur le site de la liaison ascendante, par exemple comme charge utile spécifique P. Pour éviter l'insertion de paquet additionnels, le flux transporté ou l'une de ses parties, peut constituer une suite de bits prédéterminée.

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